bsh实现ofbiz分页

java 代码

delegator = request.getAttribute("delegator");
  //获取request参数
lookupFlag = request.getParameter("lookupFlag");
shipmentTypeId = request.getParameter("shipmentTypeId");
originFacilityId = request.getParameter("originFacilityId");
destinationFacilityId = request.getParameter("destinationFacilityId");
statusId = request.getParameter("statusId");

// 设置分页参数
viewIndex = 1;
try {
    viewIndex = Integer.valueOf((String) request.getParameter("VIEW_INDEX")).intValue();
} catch (Exception e) {
    viewIndex = 1;
}
context.put("viewIndex", viewIndex);

viewSize = 20;
try {
    viewSize = Integer.valueOf((String) request.getParameter("VIEW_SIZE")).intValue();
} catch (Exception e) {
    viewSize = 20;
}
context.put("viewSize", viewSize);

//设置参数链表（paramListBuffer），接受参数
findShipmentExprs = new LinkedList();
paramListBuffer = new StringBuffer();
if (UtilValidate.isNotEmpty(shipmentTypeId)) {
    paramListBuffer.append("&shipmentTypeId=");
    paramListBuffer.append(shipmentTypeId);
    findShipmentExprs.add(new EntityExpr("shipmentTypeId", EntityOperator.EQUALS, shipmentTypeId));

    currentShipmentType = delegator.findByPrimaryKeyCache("ShipmentType", UtilMisc.toMap("shipmentTypeId", shipmentTypeId));
    context.put("currentShipmentType", currentShipmentType);
}
if (UtilValidate.isNotEmpty(originFacilityId)) {
    paramListBuffer.append("&originFacilityId=");
    paramListBuffer.append(originFacilityId);
    findShipmentExprs.add(new EntityExpr("originFacilityId", EntityOperator.EQUALS, originFacilityId));

    currentOriginFacility = delegator.findByPrimaryKeyCache("Facility", UtilMisc.toMap("facilityId", originFacilityId));
    context.put("currentOriginFacility", currentOriginFacility);
}
if (UtilValidate.isNotEmpty(destinationFacilityId)) {
    paramListBuffer.append("&destinationFacilityId=");
    paramListBuffer.append(destinationFacilityId);
    findShipmentExprs.add(new EntityExpr("destinationFacilityId", EntityOperator.EQUALS, destinationFacilityId));

    currentDestinationFacility = delegator.findByPrimaryKeyCache("Facility", UtilMisc.toMap("facilityId", destinationFacilityId));
    context.put("currentDestinationFacility", currentDestinationFacility);
}
if (UtilValidate.isNotEmpty(statusId)) {
    paramListBuffer.append("&statusId=");
    paramListBuffer.append(statusId);
    findShipmentExprs.add(new EntityExpr("statusId", EntityOperator.EQUALS, statusId));

    currentStatus = delegator.findByPrimaryKeyCache("StatusItem", UtilMisc.toMap("statusId", statusId));
    context.put("currentStatus", currentStatus);
}

if ("Y".equals(lookupFlag)) {  //如果有查看权限，则通过。
    context.put("paramList", paramListBuffer.toString());

    if (findShipmentExprs.size() > 0) {
        EntityFindOptions findOpts = new EntityFindOptions(true, EntityFindOptions.TYPE_SCROLL_INSENSITIVE, EntityFindOptions.CONCUR_READ_ONLY, true);
        mainCond = new EntityConditionList(findShipmentExprs, EntityOperator.AND);
        List orderBy = UtilMisc.toList("-estimatedShipDate");

        boolean beganTransaction = false;
        try {
            beganTransaction = TransactionUtil.begin();

            // using list iterator
            EntityListIterator orli = delegator.findListIteratorByCondition("Shipment", mainCond, null, null, orderBy, findOpts);

            // get the indexes for the partial list
            lowIndex = (((viewIndex - 1) * viewSize) + 1);
            highIndex = viewIndex * viewSize;

            // 如果  highIndex 大于总记录数，则highIndex更改。
            // 否则不变。
            orli.last();
            shipmentListSize = orli.currentIndex();
            if (highIndex > shipmentListSize) {
                highIndex = shipmentListSize;
            }

            // get the partial list for this page
            orli.beforeFirst();
            if (shipmentListSize > 0) {
                shipmentList = orli.getPartialList(lowIndex, viewSize);
            } else {
                shipmentList = new ArrayList();
            }

            // 在所记录的信息传递给shipmentList后，orli关闭。
            orli.close();
        } catch (GenericEntityException e) {
            String errMsg = "Failure in operation, rolling back transaction";
            Debug.logError(e, errMsg, module);
            try {
                // only rollback the transaction if we started one...
                TransactionUtil.rollback(beganTransaction, errMsg, e);
            } catch (GenericEntityException e2) {
                Debug.logError(e2, "Could not rollback transaction: " + e2.toString(), module);
            }
            // after rolling back, rethrow the exception
            throw e;
        } finally {
            // only commit the transaction if we started one... this will throw an exception if it fails
            TransactionUtil.commit(beganTransaction);
        }
    } else {  //没有权限
        shipmentList = new ArrayList();
        shipmentListSize = 0;
        highIndex = 0;
        lowIndex = 0;
    }
  //设置返回信息。
    context.put("shipmentList", shipmentList);
    context.put("listSize", shipmentListSize);
    context.put("highIndex", highIndex);
    context.put("lowIndex", lowIndex);
}